From 21751ce593e57642c190b77a2d162fd903a9c82b Mon Sep 17 00:00:00 2001
From: Viktor Klang <viktor.klang@gmail.com>
Date: Fri, 16 Mar 2012 16:29:11 +0100
Subject: [PATCH] Switching to - instead of filterNot

---
 akka-actor/src/main/scala/akka/event/EventBus.scala | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/akka-actor/src/main/scala/akka/event/EventBus.scala b/akka-actor/src/main/scala/akka/event/EventBus.scala
index aee9eb787c..2dd22b3b54 100644
--- a/akka-actor/src/main/scala/akka/event/EventBus.scala
+++ b/akka-actor/src/main/scala/akka/event/EventBus.scala
@@ -300,7 +300,7 @@ trait ActorClassification { this: ActorEventBus with ActorClassifier ⇒
       case null ⇒ false
       case raw: TreeSet[_] ⇒
         val v = raw.asInstanceOf[TreeSet[ActorRef]]
-        val removed = v.filterNot(monitor ==)
+        val removed = v - monitor
         if (removed eq raw) false
         else if (removed.isEmpty) {
           if (!mappings.remove(monitored, v)) dissociate(monitored, monitor) else true